[vtkusers] Why Axis Labels (X,Y,Z) do not show (Axes.py)?

[Kang Zhao]

Hi Mike,

Thanks a lot for your reply.

I did some further investigation and here are the findings:

- Upgrading PyOpenGL to 3.1.0 didn't help;
- The attached simple vtkTextActor example didn't work either ("Hello 
World!" didn't show up).

I also tested on another machine (WinXP 32-bit, Python 2.7.5, VTK-Python 
6.1.0), and it worked fine.

It seems something broken with my win7 machine. Will come back to share 
if I get any new findings...

Thanks again.

Kang

于 2014/7/28 18:59, Mike Taverne 写道:
> I see the labels when running your script.
> Both with VTK 5.8.0 and VTK 6.1.0.
>
> Changing the text and its color also works.
>
> Maybe it is a rendering issue similar to the one I have with colors on
> surfaces creates from sampled implicit functions.
>
> I'm using python 2.7.6, but I don't think that's where the problem comes
> from.
>
> OS: Ubuntu 14.04.1 LTS (64bit)
> Python: 2.7.6 (64bit as well I guess, distro package)
> VTK: 5.8.0 from the ubuntu repositories and 6.1.0 compiled from source
>
> On 28/07/14 01:53, Kang Zhao wrote:
>> Hello,
>>
>> When I ran the attached Python script, the axis lables (X,Y,Z) didn't
>> show up. I also tried playing with
>> axes.GetXAxisCaptionActor2D().GetCaptionTextProperty.SetColor(1,0,0) and
>> SetXAxisLabelText(), but no success.
>>
>> PS, the script could be found at:
>> http://www.cmake.org/Wiki/VTK/Examples/Python/GeometricObjects/Display/Axes.
>>
>> Could anyone help to share some clue?
>>
>> My environment:
>>
>> OS: Windows 7 (64-bit)
>> Python: 2.7.7 (32 bit)
>> wxPython: wxPython2.8-win32-unicode-2.8.12.1-py27.exe
>> VTK: vtkpython-6.1.0-Windows-32bit.exe
>>
>> Thanks for your help in advance.
>>
>> Kang
>>
>>
>>
>>
>>
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-------------- next part --------------
import vtk
 
# create a rendering window and renderer
ren = vtk.vtkRenderer()
renWin = vtk.vtkRenderWindow()
renWin.AddRenderer(ren)
 
# create a renderwindowinteractor
iren = vtk.vtkRenderWindowInteractor()
iren.SetRenderWindow(renWin)
 
# create a text actor
txt = vtk.vtkTextActor()
txt.SetInput("Hello World!")
txtprop=txt.GetTextProperty()
txtprop.SetFontFamilyToArial()
txtprop.SetFontSize(18)
txtprop.SetColor(1,1,1)
txt.SetDisplayPosition(20,30)
 
# assign actor to the renderer
ren.AddActor(txt)
 
# enable user interface interactor
iren.Initialize()
renWin.Render()
iren.Start()